Editorial Page Editor Alfred P. Doblin questioned the cost-effectiveness of the NJT proposal to build a deep-cavern terminal under 34th Street in Manhattan, rather than bring new tunnels and tracks to the East Side.  In his column published on Monday, December 21st, Doblin said: "the reality is that putting more people in the same part of Manhattan is just plain dumb."  Doblin criticized the proposed deep-cavern terminal, because New York's water tunnel lies between the proposed terminal and the East Side, making it impossible to extend the tracks to Grand Central Terminal.  He said: "This should be a deal-breaker for the project as planned.  It makes little sense to expend billions and billions of dollars for a less-than-perfect solution."  The Record is the first major media outlet to question the NJT plan.